The U.S. dollar index is trading higher today, now at 81.8620. The GSCI commodity index is down 0.1% at 636.48. WTI crude oil closed down 1.4% today, at $103.08 a barrel. Brent crude trades down 0.8% at $106.69 a barrel. Natural gas is down 1.3% today at about $3.43 per million BTUs. Gold for August delivery settled down 0.4% today at $1,324.80 an ounce.

The unofficial closing bells put the DJIA down less than 2 points to 15,520.59 (-0.01%), the NASDAQ rose more than 17 points (0.48%) to 3,616.47, and the S&P 500 rose 0.04% or less than 1 point to 1,685.96.

There were a several analyst upgrades and downgrades<<LINK>> today, including:

Potash Corp. of Saskatchewan Inc. (NYSE: POT) is down 16.2% at $31.76. The Canadian fertilizer maker after a Russian potash producer fled a cartel and threatened to go after market share by cutting prices.

Stereotaxis Inc. (NASDAQ: STXS) is up 233.1% at $5.92 after posting a new high of $6.90 earlier. The medical device maker received FDA clearance to market its robotic instrument navigation systems in the U.S.

Facebook Inc. (NASDAQ: FB) is up 7.2% at $37.94. The social media company announced a new distribution system for games developers, on top of a very well-received earnings report last week. Just a few more pennies and the stock will hit its IPO price.

Stay tuned for Wednesday. The FOMC ends a two-day meeting today. We have also noted the following events on the schedule (all times Eastern):